Patents by Inventor Gregg R. Doule

Gregg R. Doule has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Reduced liquid discharge in wet flue gas desulfurization
    Patent number: 7641876
    Abstract: One aspect of the invention relates to a method for removing contaminants from a flue gas stream (22). The method includes: removing fly ash from a flue gas stream (22) utilizing a particle collector (24); contacting the flue gas stream with an alkaline reagent in a wet scrubber (26); discharging a purge liquid (30) from the wet scrubber (26); and, combining at least a portion of the purge liquid with at least a portion of fly ash circulating within a dry circulating fluid bed scrubber (48) to form moistened fly ash (60).
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: January 5, 2010
    Assignee: ALSTOM Technology Ltd
    Inventors: Kelly L. Barger, Gregg R. Doule, Michael G. Varner
  • REDUCED LIQUID DISCHARGE IN WET FLUE GAS DESULFURIZATION
    Publication number: 20090162269
    Abstract: One aspect of the invention relates to a method for removing contaminants from a flue gas stream (22). The method includes: removing fly ash from a flue gas stream (22) utilizing a particle collector (24); contacting the flue gas stream with an alkaline reagent in a wet scrubber (26); discharging a purge liquid (30) from the wet scrubber (26); and, combining at least a portion of the purge liquid with at least a portion of fly ash circulating within a dry circulating fluid bed scrubber (48) to form moistened fly ash (60).
    Type: Application
    Filed: March 5, 2009
    Publication date: June 25, 2009
    Applicant: ALSTOM Technology Ltd
    Inventors: Kelly L. Barger, Gregg R. Doule, Michael G. Varner